84565480 divided by 521 
Our goal is to divide 84565480 by 521.

Advancing to step 1:
521 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 521

Step 2:
The number 521 fits into 84 0 times, leaving a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Include the next digit (5) from the dividend after 84, then repeat: 845 / 521

On to step 3:
845 divided by 521 is 1 with a remainder of 324.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 521 from 845 to get 324.
Bring next digit (6) of the dividend behind the 324 and repeat the process: 3246 / 521

Step 4:
3246 divided by 521 is 6 with a remainder of 120.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we subtract 3126 from 3246, we get 120.
Append the next digit (5) from the dividend to 120 and continue with: 1205 / 521

On to step 5:
The number 521 fits into 1205 2 times, leaving a remainder of 163.
Write down 2 as next digit of the result. 
Result so far: 162.0
If we subtract 1042 from 1205, we get 163.
Take the next digit (4) from the dividend and append it to 163, then repeat: 1634 / 521

Moving on to step 6:
1634 divided by 521 is 3 with a remainder of 71.
Use 3 as the next digit of our solution. 
Result so far: 1623.0
Subtracting 1563 from 1634 leaves us with 71.
Grab the next digit (8) from the dividend, add it to 71, then carry on: 718 / 521

Advancing to step 7:
The number 521 fits into 718 1 times, leaving a remainder of 197.
The number 1 becomes the next digit in our result. 
Result so far: 16231.0
Subtracting 521 from 718 leaves us with 197.
Fetch the next digit (0) from the dividend, attach it to 197 and continue: 1970 / 521

Moving on to step 8:
521 goes into 1970 3 times with a remainder of 407.
The number 3 becomes the next digit in our result. 
Result so far: 162313.0
Deduct 1563 from 1970 and we're left with 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Moving on to step 9:
When dividing 4070 by 521, we get 7 with a remainder of 423.
Record the quotient 7 as the next digit in the result. 
Result so far: 162313.7
If we subtract 3647 from 4070, we get 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Going ahead to step 10:
4230 divided by 521 is 8 with a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 162313.78
Subtracting 4168 from 4230 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 11:
If we divide 620 by 521, we get 1 and a remainder of 99.
The next digit of our result is 1. 
Result so far: 162313.781
The remainder is 99 after subtracting 521 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

On to step 12:
521 goes into 990 1 times with a remainder of 469.
Use 1 as the next digit of our solution. 
Result so far: 162313.7811
Deduct 521 from 990 and we're left with 469.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4690, and continue the process.

The quotient of the division is 162313.7811, and the remainder is 0.00469.